Postage costs are $.22 for the 1st ounce and $.70 for each additional ounce what is the cost of postage for letter weighing 3 ounces

The cost of the postage for the letter weighing 3 ounces will be $1.62

Step-by-step explanation:

From the question, we know that the first ounce will cost $0.22 and any additional ounces will cost $0.70, therefore, we can make the following equation where "c" is the total cost of the postage and "a" will be the total weight of the letter in ounces.

c = 0.22 + (0.70)(a - 1)

(we subtract 1 from "a" because for the first ounce we will pay $0.22 instead of $0.70)

Now we just solve the equation by substituting "a" with 3, and we get...

c = 0.22 + (0.70)(a - 1)

c = 0.22 + (0.70)(3 - 1)

c = 0.22 + (0.70)(2)

c = 0.22 + 1.40

c = $1.62

Therefore, the cost of the postage for the letter weighing 3 ounces will be $1.62.

all but the second one

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cuz that one goes over 180

mark brainliest

i think 5 miles per hour

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